Road-scraper attachment for tractors



Jan. 23, 1923. www@ Fry/.JQ

Jan, 23, i923. 31,442,796

A. E. DETWILER. RoAD ScRAPER ATTACHMENT FOR TRAcToRs.

FILED MAR. I6, 1922. 2 SHEETS-SHEET 2 Patented dan. 23, i923..

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ANGUS E. DETWILER, 0F XFORD, MICHIGAN, ASSIGNOR OF ONE-HALF T0 WILLATEREED, OF OXFORD, MICHIGAN'.

ROAD-SCRAPER ATTACHMENT FOR TZRCTORS.

Application filed March 1G, 1922. Serial No. 544,28.

To all who/m, t may con-cern Be it lmown that-l, Ansus E. Dnrwnne, acitizen of the United States, residine at Oxford, county of Oakland,State of Mtichigan, have invented a certain new and useful lmprovementin VRoad-Scraper Attachments for'lractors, and declare the following tohe a full, clear, and exact description of the same, such as will enableothers skilled in the art to which it pertains to make and use the same,reference being had to the :accompanying drawings, which form a part ofthis specification.

My invention relates to a road scraper attachment for tractors shown inthe accompanying drawings and more particularly pointed out in thefollowing specification and claims. p

rlhis invention is designed as an attachment for the so-called Cletracor Cleveland tractor. lt may however be applied to any tractor for whichit is adapted.

lhe primary object of the invention is to provide an inexpensive roadscraper attachment simple and rigidin construction and operation thatmay be readily attached or removed-from a tractor as required and notapt to get Iout of order.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention further resides in the combinationand arrangement of parts andv in the details of construction hereinafterdescribed and claimed, it being understood that changes may be made inthe precise embodiment of the invent-ion herein cdis-A closed withoutdeparting from the the same.

ln the drawings accompanying this speciication:v

Figure l is va side elevation of a road scraper attachment installedupon a Cletrac type of tractor, shown in dotted lines;

Figure 2 is a plan view of the same.

Figure 8 is a cross-sectional view taken on or about line 3 3 of Figure2 showing the re-inforcing angle irons secured tothe wall of thescraper. Y

Figure 4 is a detail sectional view through the nut for seeming the sidesupporting arms of the scraper to the rear axle of the tractor. Y

Referring now to theY letters of reference placed upon the drawings: Y

A, denotes a tractor; B, B, its track spirit of form however is notessential wheels', C, a continuous thread carried by the track wheels.D, is a scraper arc-shaped in cross-section formed ot' sheet metalreinforced by suitable angle irons E riveted to -the back of thescraper. F, F, are side rails terminating in a shoe F at their for- Wardends to which the scraper is secured. Bolted to the rear end of therails F, l?, is a littin G- adapted to rock upon the socket nut thesocket being tapped to engage' the threaded end of the rear axle. l, l,are rock-arms pivoted at l to the side rails l?. J, denotes a rollerjonrnaled in the rockarms l, and K is a link bar pivoted to one of therocker arms and toa manually operated lever L, pivoted at L to the lsiderail F. M, denotes a segmental ratchet bolted to the rail F and N is adog pivoted to the lever L adapted to engage'the ratchet. N is a linkbar connecting the dog with an operating lever N2, in' turn pivotedadjacent to the handle L2 at the upper end ot' the lever L,for releasingthe dog when required. P, l), are radius rods lpivoted at one end to an-bolt P', attac-hed to the side rails lV and to the end of the .tractorframe. P2 P2 are turn buckles for adjusting the tension of the roes.

Having indicated the several parts by reference letters the constructionand operation of the device .will be readily understood.

'lhe scraper D is preferably secured to the side rails l*l at an angleto the direct thrust of the tractor. The scraper may be adjusted to ahigher or lower altitude to suit the requirements or' the work bymanually adjusting the lever L, whereby the rock-arms l may be tilted tocause the roll 'J te either contact with the road surface whereby thescraper D may be raised above the surface of the road to any desireddegree within the limit of the throw of the lever. rlhe scraper whenadjusted may be held in the adjusted position by the dog N engaging thesegmentalratchet ltd. v A

The convex end lf of the roller reduces the resistance when turning andfor this reason the end of the roller is given an arc-shaped forxn,*asindicated in the drawings. This to the operation of the device.

Having thus described my invention what I claim is: I

1. In combination with a tractoia pair of arms respectively pivoted toeach side of yond the forward end of the latter to support a scraper, ascraper secured to the forward end of said arms, a pair of rocking1erers pivoted to the arms, a roller journaled in said rocking levers, amanually operated lever, a link bar connecting one oli the rockinglevers with the manually operated lever and means for securing themanually operated lever when adjusted.

3. In combination with a tractor, a pair of arms respectively pivoted toeach side of the tractor and projecting beyond its for ward end, ascraper secured to the forward end of the arms, a pair of radius rodspivoted to the forward end of the arms and to the frame of the tractor,means for increasing the tension of said rods, a pair of rocking leverspivoted to the arms, a roller jour- ,n'aled in the rocking levers andlmeans for y l.tilting the rocking levers, whereby the roller may raiseor lower the altitude of the scraper.

4. In combination with a tractor, a pair of arms having an arc-shapedfoot piece at one end, an arc-shaped scraper bolted to the foot piece ofthe respective arms, a bored fitting secured to the opposite end of eachof the arms, a socket nut extending through the bore in each fittinghaving a screw threaded engagement with each end of the axle, rockerarms pivoted to said arms, a roller journaled in the rocker arms andmeans for tilting the rocker arms, whereby the roller may loe raised orlowered to adjust the altitude of the scraper. l

5. In combination with a tractor, a pair of arms respectively pivoted atone' end to the axle of the tractor having a lateral extension at theirforward ends, a scraper'secured to said lateral extension, means se-Ycured to the scraper for re-inforcing the latter, rocking levers pivotedto said armsand a roller journaled in the 'rocking levers adapt ed tobear upon the road surface to raise or lower the scraper.

6. ln combination with a tractor, a pair of arms pivoted to the axle oneach side of the tractor and extending beyond the forward end or' thelatter to support a scraper, a scraper secured to the forward end of thearms, a pair of rocking levers pivoted to the arms` a. roller journaledin said rocking members having convex ends, whereby it may more readilyfollow the direction taken by the tractor and a manually operated leverconnected with the rockinglevers for tilting said roller whereby thealtitude of the scraper may be raised 0r lowered.

ln testimony whereof, I sign this specification .in the presence of twowitnesses.

ANGUs DETWILER.

lVitnesses S. E. THOMAS, I. J. MURPHY.

